Different kinds of birds live all over the world. Chickadees adapt to cold weather in the north, while African penguins dive to catch fish off the coasts of Africa. Beginning readers hone their phonics skills while learning about unique birds around the globe. As readers practice decoding words with r-controlled vowels, they gain science knowledge. Every Stairway Decodables nonfiction book combines multiple aspects of the Science of Reading to support small group instruction, independent reading, and reading practice at home.